RE: Schmoyer Sunquest

Well, Roger, I like looking at both, sometimes? Dave :{) From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Roger Sent: Tuesday, March 19, 2019 4:38 PM To: Ian Maddocks ; sundial@uni-koeln.de Subject: RE: Schmoyer Sunquest Thanks Ian It looks like the real McCoy, a

RE: Frank King

"fully" ? Sadly understated! -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Richard Langley Sent: Thursday, February 21, 2019 6:14 AM To: Frank King Cc: Sundial List Subject: Re: Frank King I run into that problem all the time concerning GPS and

RE: easy drawing a vertical sundial

Now, THIS is a really cool device! I probably won’t buy one, but I really like the idea. Some reservations about the execution – accuracy/precision, repeatability, long-term buildup of erased ink, but hopefully, the developers have those issues all worked out (or will by delivery time!)

RE: Summer Solstice in Florence

Thanks for the link, Jim! A lovely spectacle. On the slightly negative side, it never ceases to amaze (or amuse) me, the number of idiots that take flash photos of scenes of light. Same with the thousands of puny firefly flickers in the stadiums, serving only to light up the heads of the

RE: From sundial to sundial along a meridian to Cistercian abbeys

The aphorism about the difference between Americans and Europeans probably applies equally well to Australians! In the US, 100 years is a long time, while in Europe, 100 miles is a long distance! Dave From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of

RE:

How beautifully simple and elegant! And a great quote from Ferguson: "The simpler that any machine is, the better it will be allowed to be, by every man of science." Dave -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of tonylindisun--- via sundial Sent:

RE: Watches that display EoT

Here are pics of my “watch”! Dave From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Dan-George Uza Sent: Sunday, March 19, 2017 4:02 PM To: sundial@uni-koeln.de Subject: Watches that display EoT Hello, Here's an interesting wristwatch from this year that shows the

RE: Watches that display EoT

And only $1M ! From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Dan-George Uza Sent: Sunday, March 19, 2017 4:02 PM To: sundial@uni-koeln.de Subject: Watches that display EoT Hello, Here's an interesting wristwatch from this year that shows the Equation of Time in a

RE: A different sort of timekeeping

Possibly related method?? https://www.youtube.com/watch?v=ETz0elhKvkM Dave From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Dan-George Uza Sent: Friday, February 24, 2017 2:51 AM To: sundial@uni-koeln.de Subject: A different sort of timekeeping Dear group, Here's

RE: Why we should reform the Calendar

Hear, hear!! From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Dan-George Uza Sent: Saturday, January 28, 2017 12:38 PM To: sundial@uni-koeln.de Subject: Why we should reform the Calendar A bit off topic, but I enjoyed this quite a lot! https://youtu.be/EcMTHr3TqA0

RE: Looking for minutes and seconds correction for whole year for Equation of Time plaque

Thanks for reminding us of your work, Kevin! That’s a lovely piece of JavaScrpt! Dave From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Kevin Karney Sent: Friday, January 27, 2017 2:40 AM To: Kenneth R clark Cc: sundial@uni-koeln.de Subject: Re:

RE: Leap Second Quiz Question

Logically, tidal power should slow the Earth's rotation. Mechanical energy, imparted by the combined gravitation of the Sun and Moon is converted to electrical energy, then primarily dissipated as heat. Drag applied to the tidal surge must, to some extent, add drag to the Earth's rotation.

RE: Sundial Puzzle Corner

ucent, you should be able to overlay the halves pretty accurately. I do agree that the geometric method is elegant and gives a much better result! Dave -Original Message- From: Frank King [mailto:f...@cl.cam.ac.uk] Sent: Sunday, October 30, 2016 7:37 AM To: Dave Bell <db...@thebells.n

RE: Sundial Puzzle Corner

Personally, I'd fold the paper, superimposing the reflected half-ellipse, crease it, unfold, rotate ~90 degrees and repeat! Dave -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Frank King Ancillary Question: I hand you a perfect ellipse drawn on a

Re: A Strange Rainbow

Typically, this would indicate ice crystals in the upper atmosphere. A normal rainbow is formed by water droplets with two internal reflections, so the rainbow's light is projected back towards the sun. In this case, the light is passed forward through the crystals, at an angle determined by

RE: Sunsweep sculpture

So, this is the western-most piece of the "arch". Sad that it appears to have been broken. Well, if the plane of the arch is oriented E-W, and it's vertical, as it appears tobe, then the normal to the plane faces North, though no to Polaris. He equinoctial; sunrises and sunsets would also be due

Re: Sundial in Risen movie

So true! But it looks more like an iStone 0.90 Dave Sent from my iPhone > On May 6, 2016, at 4:03 PM, Jack Aubert wrote: > > He looks like he’s texting something on his Iphone. > > From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of John Davis > Sent:

RE: NY Public Library photos online

Well, those links got thoroughly trashed! I'll try again... And yes, there is a top-level search bar. Sundial leads to: http://digitalcollections.nypl.org/search/index?utf8=%E2%9C%93=sund ial The third one shown: http://digitalcollections.nypl.org/items/510d47dc-84c6-a3d9-e040-e00a18064a9 9

RE: NY Public Library photos online

http://www.npr.org/sections/thetwo-way/2016/01/06/462128514/new-york-public- library-makes-180-000-high-res-images-available-online -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of kool...@dickkoolish.com Sent: Saturday, January 9, 2016 12:00 PM To:

RE: NY Public Library photos online

Sorry, that was a 2nd-order link. Tjos is more direct: http://www.nypl.org/blog/2016/01/05/share-public-domain-collections -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of kool...@dickkoolish.com Sent: Saturday, January 9, 2016 12:00 PM To:

RE: NY Public Library photos online

And yes, there is a top-level search bar. Sundial leads to http://digitalcollections.nypl.org/search/index?utf8=%E2%9C%93=sund ial The third one shown http://digitalcollections.nypl.org/items/510d47dc-84c6-a3d9-e040-e00a18064a9 9 looked familiar. We have the original of it in our Stained Glass

RE: Diamond Fuji

Very nice, Roger! Perfect location and timing, producing some beautiful shots. Of course, location and timing is what this is all about – somewhere, there is a great shot almost every morning and evening. Randall Munroe of XKCD just posted this last week: http://xkcd.com/1622/ Dave

RE: sundial Digest, Vol 120, Issue 9

>From Google Maps: https://www.google.com/maps/place/Inti%C3%B1an+Solar+Museum/@-0.0018115,-78. 4550982,301m/data=!3m1!1e3!4m6!1m3!3m2!1s0x91d5881ef89bad91:0xb2e1699b00a1a9 b8!2sMiddle+of+the+World!3m1!1s0x:0x9dd499d10a8da244!6m1!1e1 Looks like a large educational center!

RE: Just the right spot and time!

Yes, the surprise is not so much that it happened, but that the photographer was there at the one(?) precise date and time. Like a stopped clock, it’s precisely correct, once each period! Makes a great picture, regardless. Dave _ From: sundial

Re: Possible sundial in movie

Beautiful dial and setting, Dick! But please explain for us: What's supporting all those turtles?!? Dave Sent from my iPhone > On Oct 1, 2015, at 3:53 AM, kool...@dickkoolish.com wrote: > > Here's an example of a dial with an equitorial band all around. > >

RE: Looking for suggestings on surface treatment of my aluminum cross sundial "Time to Reflect"

I should have added that this is a beautiful dial! I have long considered one almost exactly like this, if I design my own and my wife's memorials! Should we decide instead on cremation, maybe I'll *very permanently* install it in our yard. Make it nearly impossible for future homeowners to

RE: Looking for suggestings on surface treatment of my aluminum cross sundial "Time to Reflect"

I would suggest anodizing! The best etch for aluminum is not acid, but alkali, and following that by staining, essential *is* anodizing. Here's one reference on various finishes: http://www.saf.com/how-to-specify/how-to-decide-between-anodizing-painting-a nd-powder-coating/ Note, "Anodizing

Re: Antikythera mechanism

Coincidentally, in today's Gizmag: http://www.gizmag.com/hublot-antikythera-mechanism-first-computer-watch/20517/ Now, you can wear a (subset of) the Antikythera Mechanism... Dave Sent from my iPhone On Aug 17, 2015, at 3:06 AM, tonylindi...@talktalk.net tonylindi...@talktalk.net wrote:

RE: Deltacad

You might check this one out: http://www.deltacadusersgroup.org/Forums/archive/index.php?thread-158.html And search here: http://www.deltacadusersgroup.org/macrospage1.html Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Donald Christensen Sent:

RE: A Digital Sundial on Instructables

The projection distortion could be somewhat compensated by distorting the number cutouts, so the early and late hours are comparatively narrower. Dave -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Fabio nonvedolora Sent: Friday, April 24, 2015 1:49

RE: Reflecting Dials

Carlo, that is a beautiful dial and seriously interesting concept for a reflecting design! The manufacturing process is very clever, with the laser and NC machining of the spherical dial face. Perfect for automating the localization and any customization required. Is the concave mirror stainless

RE: Solstice alignments at the Taj Mahal

Interesting! But not too surprising, I think. Perhaps I'm reading too little into this. Assume the grounds, with waterway and flanking pavilions were laid out N-S and E-W and symmetrically. Then the only significant point here is that the Summer Solstice rising and setting points are aligned

RE: App for iPad

Tony, it looks like you machined those panels yourself! A beautiful app, indeed! Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Tony Moss Sent: Monday, January 12, 2015 2:15 AM To: sundial@uni-koeln.de Subject: App for iPad Hi all, While

RE: sundial Digest, 3D Printers

This is known as a Delta printer. The three vertical axis motors each move a pair of parallel arms that connect to a small triangular platform at the bottom end of the hanging arms. By controlling the three motors, the machine can move the platform anywhere in a triangular prism volume. The

RE: huit nuits [SEC=UNOFFICIAL]

That Metafilter link was great! Quite a discussion. On a different note, even further removed from gnomonics, I was struck by a similar word coincidence. In Russian, One is odin (uhdeen) The Norse shamanic god, Odin, was typically depicted with one eye. Dave _ From: sundial

RE: Theatrical sundial

Answered like a true stage-dresser/set builder! Often, the simplest methods are overlooked when we try to create an effect. Dave -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Peter Mayer Sent: Thursday, April 03, 2014 4:08 PM Hi Jackie, Why

RE: British Renaissance and sundials

Yes – great presentation! 101, when I viewed it. Question, primarily for those who saw it on BBC TV: What happened to the music for Spem in Alium?!? Total choral silence throughout that segment! Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of

RE: Garden planning problem

Your logic is correct; I was confusing the problem with something else. Now, I can't remember just what that something else was! What made it harder to visualize is that the range would run from 0 to 1 either way, as the angle changes from 0 to 90 degrees. I did find a nice little java applet

RE: An opportunity

Very interesting model, Fabio! Please tell us more about it; I didn’t see anything related on your website. Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Fabio nonvedolora Sent: Sunday, November 24, 2013 5:08 AM To: sundial@uni-koeln.de Subject: Re: An

Re: 08:09:10 11/12/13

As for y/m/d, I completely agree, but for a full sort, we should also write hh:mm:ss ! Dave Sent from my iPad On Nov 13, 2013, at 1:43 PM, Thaddeus Weakley thadweak...@yahoo.com wrote: I too strongly agree with Paul. The /MM/DD format sorts numerically; something that I gravitated to

RE: Astronomy Picture of the Day

To be honest, it's not even (all) the Republicans. It's a vocal and powerful minority of that party, that feel they can impose their demands upon the rest of the nation. Both major parties have been at fault throughout this sordid affair, due to their inability to compromise, but currently, the

Re: sundials from orbit

A very nice and readable dial in Ingleside Terraces neighborhood of San Francisco. 37.72465,-122.46875 Zoom out a little, and you’ll see the development is in one of two competing horse racing tracks from the 19th and early 20th centuries! Dave Sent from my iPad On Oct 1, 2013, at 10:57 AM,

Re: Tony Moss - hacked

The real take-away lesson in that story is DON'T TRUST THE CLOUD Sent from my iPad On Sep 28, 2013, at 11:17 AM, rmallett postmas...@rmallett.plus.com wrote: On 28/09/2013 18:03, Roger Bailey wrote: Hi Tony, James Fallows wrote an excellent article on his experience when his wife's

RE: Tony Moss - hacked

It's a pretty common scam. The perp gets access to someone's email address book, and sends out the appeal to various contacts. It doesn't seem to be ALL contacts, and it isn't clear how they are selected. The first such email I received was from a lady we met on a trip, and had exchanged maybe

Re: sunrise/set/twilight calculators ?

how about altitude - CTIO shows as 2200 meters... Sent from my iPad On Sep 4, 2013, at 8:49 AM, Rob Seaman sea...@noao.edu wrote: And the winners are: Pyephem turns out to be layered on Elwood Downey's Xephem - can't go wrong there! However, rather than the usual python package

RE: Another building reflection of sun fries eggs

Aaarrgh! .the building's shape magnified the Sun's rays enough to . Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Tom Kreyche Sent: Tuesday, September 03, 2013 3:20 PM To: Sundial list Sundial list Subject: Another building reflection of sun fries eggs

Re: Orologi Solari n. 2

paper in one piece, making for easy transfer to the equatorial surface... Still undecided about whether I should design it for civil noon or local solar time. :{) Dave Bell N37.3 W121.97 Sent from my iPad On Aug 19, 2013, at 6:37 AM, sun.di...@libero.it sun.di...@libero.it wrote: Dear

RE: Re: Orologi Solari n. 2

be at the solstices. That size would allow me to plot the curve on 11x17 paper in one piece, making for easy transfer to the equatorial surface... Still undecided about whether I should design it for civil noon or local solar time. :{) Dave Bell N37.3 W121.97 Sent from my iPad On Aug 19, 2013

RE: Visibly Moving Gnomon Shadows

I’m a little surprised at the hair-splitting responses regarding extreme precision (Kevin was specifying 0.05 in/sec) and surface characteristics, all of which are true, but missed the simple point of how large would the dial have to be. For a very rough first approximation, we know the shadow

RE: Unicode characters for degrees, minutes, seconds above the decimalpoint.

Good call, Steve! With that in hand, you can easily (under Windows) enter both marks directly from the keyboard. There is a means (perhaps not well known) supported by most MS and many non-MS programs, to enter any Unicode character. Using the numeric keypad (NOT the top row of numbers

RE: Unicode characters for degrees, minutes, seconds above the decimalpoint.

...@telus.net] Sent: Saturday, July 06, 2013 5:19 PM To: Dave Bell; 'Sundial list' Subject: Re: Unicode characters for degrees, minutes,seconds above the decimalpoint. Interesting Thanks Steve and Dave. I use the Alt codes all the time for degrees, Greek and accents in Word. But my

RE: Today's Google Banner

to stroll all the paths. Dave Bell _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Perit Alexei Pace Sent: Monday, April 15, 2013 2:55 AM To: sundial Subject: Re: Today's Google Banner The Konigsberg bridges dilemma is particularly intriguing when explained

RE: A prize for the worst 'non-dial', of the year?

Impressive! But it would be better with a bulls-eye level, rather than the latitude scale... -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Anne Lennon Sent: Thursday, April 04, 2013 2:17 AM To: sundial@uni-koeln.de Subject: Re: A prize for the worst

RE: From the New York times

What a lovely story!! Congratulations, Sara! Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Robert Terwilliger Sent: Sunday, March 31, 2013 8:49 AM To: sundial@uni-koeln.de Subject: From the New York times Sara

RE: another free programmable CAD program in addition to DeltaCAD andFreeCAD

(ability (action (agent we) (time now) (object LISP) use)) ! -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Simon [illustratingshadows Sent: Sunday, March 31, 2013 12:10 PM To: sundial@uni-koeln.de Subject: another free programmable CAD program in

RE: Bexhil on Sea dial

The world (now, at least) is full of worriers, Martina. Not to mention attorneys... I can sort of see minor issues with the old Bexhill dial you showed us, with the raised, sharp-edged hour markers. They do look like they could present a trip hazard, especially with young children or soused

RE: Sundial on Mars - Spirit

I have a large print of this webcomic on my office wall: http://xkcd.com/695/ Poor little guy. Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Woody Sullivan Sent: Saturday, August 11, 2012 12:23 AM To: sund...@rrz.uni-koeln.de Subject: Re: Sundial on

RE: Off topic but well worth sharing

Thank, you, thank, you, thank you, Tony! What a beautiful way to start my morning. And yes, Willy, touching indeed. I dearly love Beethoven’s setting of the Ode to Joy, and to see the response of all the onlookers, from the little children to the old folks, singing and “conducting” along with

RE: R: Orologi Solari

Mac, what sorts of anti-virus programs are you running on your machines? It sounds like your systems' settings are extremely tight! Oh - and what browser and settings are in place? I had no problems, but have full Admin rights, and was using Firefox, with fairly relaxed security settings. I rely

RE: R: Orologi Solari

I just checked the site, (re-)downloaded the installer, and checked it for viruses with Windows Security Essentials. All clean, and no hitches in accessing the site or the download. Dave -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of David Andersson

RE: a way to determine the period of insolation of a wall, using an analemmatic sundial

Very elegant! It would be interesting to build a mechanical model with a moveable rule for the wall line, for field checking. Dave _ From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Willy Leenders Sent: Sunday, July 01, 2012 11:54 AM To: Sundial sundiallist

RE: Sundial found in Jamestown excavation

Yes, the hour lines are rather haphazardly aligned, but: 1) They do seem to be (re-)drawn along the original engraving lines 2) It appears that they correctly converge (the ones that do, anyway) at the north edge of the string-hole, where the string actually lies, not at the

RE: The most exact sundial of the world In Samedan!

It’s an interesting dial and looks well engineered, but there sure isn’t much information around about it. Appears to be an Equatorial dial with rotating outer ring to adjust for EoT and Summer Time, but I don’t see how one *reads* it. That tiny axial pin is useless as a gnomon except at the

RE: sundials and tower clocks

You mean to say a mariner couldn't determine his heading and range from the light by timing the sweep, compared to an atomic clock?!? Shocking. (. how spoiled we can get with modern navigational aids!) Dave _ From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de]

RE: Why are schools, across the world, 'banning' analemmaticsundials ?

I had to look this one up, found what I assume is the same under Rope Spar sundial. What a great idea! I didn't have time (while at work) to figure out the details described of how the spar is aligned to a particular angle, though. If it was level, and true East-West aligned (and maybe that's

Dialing - Pyro crossover

From a New York Times description of the fireworks displays planned for July 4, 1862: A beautiful Mechanical Piece, commencing with a horizontal wheel, changing to a vertical globe, which, by their combined motions, will represent the annual and diurnal motions of the earth, and showing the

RE: Eratosthenes (Robert Kellogg)

That’s an easy mistake, Tom! Work it out this way: If you were at the north pole, N 90° latitude, what would the Sun’s elevation be at noon? Or, if you were on the Equator, 0° latitude? The Sun’s elevation at the Equinox is 90°-your latitude. Since yours is *so* close to 45°, it’s

RE: Shadow caster

_ From: Reinhold Kriegler [mailto:reinhold.krieg...@gmx.de] Sent: Sunday, March 04, 2012 11:51 AM To: 'Dave Bell' Subject: AW: Shadow caster ☺ I thought so!!! Actually: Inside the house a little sunspot is much more fun than a tiny dizzy and diffuse shadow point… Reinhold

RE: Shadow caster

the winter, but a good cleaning did little to improve clarity; just made the blotchiness more evident. Dave _ From: Roger Bailey [mailto:rtbai...@telus.net] Sent: Sunday, March 04, 2012 2:59 PM To: John Lynes; Dave Bell Subject: Re: Shadow caster It is likely worse than

RE: From Mexico with love...

Beautiful rooms and concepts, Ruben! A wonderful teaching facility. Your low latitude is certainly a help in fitting these dial displays to an interior. After viewing your pages, I once again looked at my living room with an eye towards a noon line, as I have a roof window well situated near the

RE: Proceedings for Future of UTC meeting

Frank, you ask, Now just what was it that was going on 2011 years ago? Isn't the correct answer, Not a whole lot! Jesus was only 7 years old... Rejoice in the return of the Sun! Blessed be... Dave -Original Message- From: sundial-boun...@uni-koeln.de

RE: Proceedings for Future of UTC meeting

conclusive on it. He just did a fun radio program that was basically The truth about Christmas and Hanukah! Dave -Original Message- From: Frank King [mailto:frank.k...@cl.cam.ac.uk] Sent: Saturday, December 24, 2011 10:15 AM To: Dave Bell Cc: 'Frank King'; sund...@rrz.uni-koeln.de

RE: An alternative mapping site

Jim Tallman *did* ask, Let me know what you think and how it works for your part of the world . Dave _ From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Alexei Pace Sent: Thursday, November 17, 2011 6:14 AM To: Richard Mallett Cc: Sundial

Slow Time

A nice concept, considering our recent discussions on timekeeping: http://www.kickstarter.com/projects/scottthrift/the-present?ref=NewsOct1311 http://www.kickstarter.com/projects/scottthrift/the-present?ref=NewsOct1311 utm_campaign=Oct13utm_medium=emailutm_source=newsletter

RE: Walking Shadow Riddle

Interesting question!! I couldn't get my head around it, either, so tried plotting it in Excel. Grabbing a table of Solar Azimuth for Tucson on today's date, I estimated a 5 mph rate. Since the Sun rises just barely South of East, the path starts out heading North and mostly West. By noon,

RE: Minimum size (was Re: the nature of time, was RE: UTC Conference)

One more example of how much one learns from this group! I always thought that *was* a saying from the US side! -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Tony Moss Apologies if I seem to be 'teaching my granny to suck eggs'

RE: Falling Tree

Karon, even as a life-long XY, I was not offended by your humor, nor I imagine were most of us. Another maillist I have been enjoying for several years almost was closed down two days ago, due to an argument about attachment sizes and trimming of posts. The list owner, self-admittedly a

RE: Falling Tree

I’m sorry, Julie – did you say something? _ From: Julie Gard [mailto:jet...@live.com] Sent: Friday, August 12, 2011 5:23 PM To: db...@thebells.net; ka...@karonadams.com; dchristensen...@gmail.com Cc: sundial@uni-koeln.de Subject: RE: Falling Tree I, for one, found yesterday's

RE: Longitudinal shift, another way

Simplest dial of all to understand – it’s a space-frame model of the Earth… _ From: karon [mailto:ka...@karonadams.com] Sent: Wednesday, July 27, 2011 5:06 PM To: 'David Bell' Cc: sundial@uni-koeln.de Subject: RE: Longitudinal shift, another way DARN IT! now I have to learn how

RE: Longitudinal shift, another way

Ah - of course! Mount the ring in reverse, and the numbers go the other way 'round. _ From: Chris Lusby Taylor [mailto:clusbytay...@enterprise.net] Sent: Wednesday, July 27, 2011 6:10 PM To: David Bell; ka...@karonadams.com Cc: sundial@uni-koeln.de Subject: Re: Longitudinal shift,

RE: Most Valuable Sundial?

Exactly. This article confuses valuable with expensive! Make a garden non-dial of a carved solid diamond. Is it valuable? Or just ostentatiously costly. _ From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Roger Bailey Sent: Saturday, July 16, 2011

RE: How to force spreadsheet to create printable graph with samescale in X and Y?

It's not easy, as I have also found. Here's a hint to the procedure. The author's intent is to force a certain aspect ratio on the chart, for the best visibility of trends. Interesting concept, in itself... Another suggestion farther down, below the == bar. Dave

RE: Multignomon Sundial

Keeping the stainless steel as a requirement, you might epoxy a small, high-tech ceramic magnet to the top of each SS pin. Then, a magnet used as a probe could extract the pins, once you've lifted the sculpture enough to take off the side load on the pins. Dave _ From:

RE: Multignomon Sundial

I haven't finished my morning coffee yet, so may be missing something, but what sort of compound angle will this jig not do? If you need to drill a hole off normal to the surface, the jig aligns that. Then, if the plane of the hole is also not parallel to one of the dial plate edges, you rotate

RE: Are there any commercially-available 'Teaching Sundials', for schools ?

(under the law) conduct a risk assessment of any new addition to the school buildings or grounds. Just as mentioned by Dave Bell and Frank King (though they were probably intended as 'tongue-in-cheek' comments), that is EXACTLY why we cannot get permission for a 'dangerous' Human Sundial painted

RE: Print me a Stradivarius...

Can one 'print' a dial, gnomon and all, for example? Could an incompetent like me print out a fabulously ornate gnomon which hitherto only the likes of Tony Moss could create? Simply put, Yes! But the Devil's in the details. Developing the necessary definition files is still a big task, a great

Dial photo I ran across

On the f295 Forum for pinhole photography, a couple of pics of the dial in Peckham Rye Park, London: _http://www.f295.org/Pinholeforum/forum/Blah.pl?m-1222461148/s-0/#num6_ I vaguely recall reading about this dial on this list at one time. Anyone have more information about it? Dave

Re: FW: Computer Aided Dialling: progeCAD Smart - a LISP h-dial for anyone who cares

Simon [illustratingshadows wrote: I am completely disinterested in LISP. But this is a working skeleton for anyone who is so interested. It has one bug which I document, and needs an enhancement, which I also comment on. And it is not going to be me who does any more work on it. LISP is not

Re: Skylight Dial

Carl Barbara Sabanski wrote: I have attached a photo of the sundial with the hour lines extended. They appear to join at an origin located at the top edge of the banner making this top edge the style. Looking closely at the vertical corner where the yellow and blue walls join it can be seen

Re: Skylight Dial

Carl Barbara Sabanski wrote: Looking closely at the vertical corner where the yellow and blue walls join it can be seen that the glass roof actually slopes down slightly. I was taking a closer look at this, before I closed the image viewer. Looking at the blue tiled wall, it's clear that the

Re: Azimuth of Sunrise - Sunset

Robert Terwilliger wrote: How about a single (composite) photo of the sun rising AND setting on the Winter Solstice? http://apod.nasa.gov/apod/ap071222.html Bob Beautiful!! Be sure to click through to the photographer's pages. Some great astronomical and travel photos. The pages of

Urgent call:

to Romania, and they are hoping for a permission to use one, and a higher-resolution image. Thanks! Dave Bell [EMAIL PROTECTED] http://www.nauticoartiglio.lu.it/almanacco/Aa_ecli_13.htm --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Mystery object

Frederick Jaggi wrote: Hi Everyone: Here's a mystery object from the current Skinner auction. Could it be sundial related? http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 +refno=++691521saletype= Fred Jaggi --- Or,

Re: Equation of Time

Roger Sinnott wrote: Mac and others, Here is a first attempt, using Google Sketchup. -- Roger Nice!! So, you have two matching inclined surfaces, one on the pedestle, and one on the carrier. If you were doing this for a telescope, I

Re: Painted Wall Sundials Webpage

Subject: New Webpage of Painted Wall Sundials at http://www.advanceassociates.com/WallDial/PWS_Images.html The page is now up to 161 painted dials! --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Are there any Complex number formulas used in sundial calculations?

Chris Lusby Taylor wrote: When tabulated trig functions became available, and since calculators became affordable, trigonometric equations involving only real (not complex) scalars (i.e. numbers, not vectors) became the favoured form. Tony Belk recently published a series of articles in the BSS

Re: Heliochronometer card dials?

On Tue, 17 Oct 2006, Fred Sawyer wrote: The Icarus dial by Carlo Heller is a universal ring dial with adjusments for longitude, dst, and equation of time. I'm not familiar with that design, and couldn't (quickly) find a reference to it, but what about something like this, cut from heavy

Re: A very cool clock--Can you figure it out?

On Fri, 29 Sep 2006 [EMAIL PROTECTED] wrote: Sundial Listers: I met a media student named Josh Anderson at Teacher's College in New York, who had developed a fascinating graphic clock for his computer screen. I asked him to make it available on the web. Here is the link.

Sundial? Another interesting art project

Well, it does sort of indicate solar time. http://www.wonderblimp.com/sundial/ Dave --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Sundial Website Ideas

John Carmichael wrote: Here is a wish list for 2 educational sundial websites that do not exist but should: 1. _www. paintedwallsundials.com_ 2. www.interestinggnomons.com http://www.interestinggnomons.com I don't have time to put these websites together and Dave Bell would strangle me

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